Abstract

The article presents the results of field experiments on the effect of mineral fertilizers and bacterial preparations on the yield and quality of safflower seeds. Studies were conducted in 2016-2018 in the North-Eastern zone of the Rostov region on dark chestnut soils. The object of research was the variety of safflower Zavolzhsky-1. Predecessor was winter wheat. As mineral fertilizers, ammonium nitrate and ammophos were used in various doses, according to the scheme of experience, which were introduced simultaneously with sowing or randomly for presowing cultivation. The bacterial preparations were presented to the associative nitrogen-fixing bacteria of the strains Minorin, Flavobacterium, KL-10 production research center of Pushkin. In the field experiment, the variants of the joint application of mineral fertilizers and pre-sowing treatment of seeds with bacterial preparations were also studied. The control was an option without the use of mineral fertilizers and bacterial preparations. The research methodology is standard for studying the action of fertilizers. The average seed yield of safflower on the options amounted to 1,03-1,22 t/ha, oil content of seeds of 35.9-36.3 percent, and the yield of oil yield of seeds from 1 ha – 337-398 kg. In the course of research, we have found that the optimal dose of mineral fertilizers, providing the greatest yield and yield of oil in harvest – introduction of scattering under the sowing cultivation at a dose of N48P52. The increase to the control variant was 18.4%. The yield of oil was increased by 23.7%. The bacterial preparation with associative strains of nitrogen-fixing bacteria for use on natural background fertility of the soil Flavobacterium was identified. The increase in the yield of oilseeds was 13.6%, oil collection was 18.1%.

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